Translation
(51) Gifts
كتاب الهبة وفضلها والتحريض عليها
(14) Chapter: Giving gifts by a husband to his wife, and by a wife to her husband
(14) باب هِبَةِ الرَّجُلِ لاِمْرَأَتِهِ وَالْمَرْأَةِ لِزَوْجِهَا
Sahih al-Bukhari 2589 

Narrated Ibn `Abbas:

The Prophet (ﷺ) said, "One who takes back his gift (which he has already given) is like a dog that swallows its vomit."

حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا ابْنُ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ الْعَائِدُ فِي هِبَتِهِ كَالْكَلْبِ يَقِيءُ، ثُمَّ يَعُودُ فِي قَيْئِهِ ‏"‏‏.‏
Reference : Sahih al-Bukhari 2589
In-book reference : Book 51, Hadith 23
USC-MSA web (English) reference : Vol. 3, Book 47, Hadith 762
  (deprecated numbering scheme)